docs: def set_configuration_options(self, values=None):
          """
          Set Cassandra configuration options.
          ex:
              node.set_configuration_options(values={
                  'hinted_handoff_enabled' : True,
                  'concurrent_writes' : 64,
              })
          """
          if not hasattr(self,'_config_options') or self.__config_options is None:
              self.__config_options = {}
  
          if values is not None:
              self.__config_options = common.merge_configuration(self.__config_options, values)
  
          self.import_config_files()